6% Battery Degradation after 3 years, 35k miles

[PianoDan0]

Apart from SOH, CarScanner has more sensors showing battery degradation.

Before replacing 2 faulty modules, please check these:
HVB SOC Variation Battery Modules %
HVB Minimum Module Voltage
HVB Average Module Voltage
HVB Voltage Variation Battery Modules

Here's the data from my most recent log.

I know the modules are bad. It's throwing a P0B24 error code. Also, it throws a charging fault at exactly 69% when I have it set to charge to 85%. After a few hours (overnight), it kicks back in and charges up to 85% likely after the voltage on the modules settle. They did a test (pin test I think is what they said?) and it determined that 2 modules need replacing.

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[dtbaker61]

38 months and a little over 39k and we are at 91.5% SOH. It could be better but to be honest I haven't planned for long term battery life. I let the battery run down to the 20% range then charge to 100%. We use faster chargers a lot as well. The only bad habit I didn't embrace was leaving the battery charged at 100% for long periods. These days I charge to 80% a few times a week now.

========== my battery state of health ====
via CarScanner in the morning after a full charge to 100% overnight
in garage, which is around 60 in winter, and 70 in summer in AM
22k = 95.0%
25k = 94.5%
36k = 93.5% (40 months)

I usually keep battery between 50%-80%, charge to 100% a couple times a month before 'long work days', and have used DCFC probably less that 10 times total on lone long road trip in 3 years.

 

[Accord07]

I wouldn't read too much into the HVB SOH value. In my experience it is certainly not proportional to battery capacity. The first time I plugged in an OBD II scanner was on a winter day a month or so after taking delivery and the odometer reading was around 2,000 miles, and the reading was 97.5. Over the next two years and nearly 60K miles it went down to 91.5. Right after the HVBJB recall, the reading dropped substantially to 85, even though the Energy to Empty reading when charged to 100% was the same before and after the recall. It has slowly creeped back up to 87 over the next few thousand miles. Now at just over 70K miles, on a warm day the Energy to Empty reading and well as actually driving range on familiar routes are ~5% lower than they were two years and 60K miles earlier.

 

[TD1273]

This is the dashboard you were telling me to get that number yesterday?

What scanner are you using for this type of information. Thanks

 

[Jerrytball]

What scanner are you using for this type of information. Thanks

What scanner are you using for this type of information. Thanks

What scanner are you using for this type of information. Thanks

I believe it was this one and using the Car Scanner app

 

[Jerrytball]

What scanner are you using for this type of information. Thanks

The scanner and I use the Car Scanner app. Sorry posted this too many times something happened.

 

[TRP]

That’s really good!

You must treat yours more kindly than I do?

I treat it like a car. If I need to travel, I take it. We go to Baltimore and Chicago often. I only DCFC on those trips, but that may be 10 or more sessions. the rest of the time I charge at home to 90% regularly and only to 100% on occasion.

 

[TRP]

That's really good. Care to share your charging and driving habits?

Charge at home to 90%, occasionally 100%. Road trip and DCFC when I do so. Honestly I just drive it like I would any other car. If I need to DCFC, I do and not worry about it

Edited to add that at home I always keep it plugged in. Charge schedule starts at 9pm and is complete by 9am. Really no reason for that schedule since we do not have time of use here.

 

[Teslaeata]

I treat it like a car. If I need to travel, I take it. We go to Baltimore and Chicago often. I only DCFC on those trips, but that may be 10 or more sessions. the rest of the time I charge at home to 90% regularly and only to 100% on occasion.

Ditto! Bought it to work hard, and boy does it work hard, goes out fully loaded with all this for c90% of its mileage…..

 

[TRP]

Ditto! Bought it to work hard, and boy does it work hard, goes out fully loaded with all this for c90% of its mileage…..

Very cool.

 

[Earlofsandwich]

Apart from SOH, CarScanner has more sensors showing battery degradation.

Before replacing 2 faulty modules, please check these:
HVB SOC Variation Battery Modules %
HVB Minimum Module Voltage
HVB Average Module Voltage
HVB Voltage Variation Battery Modules

can you explain what these are and what they are measuring? Trying to interpret the values I am getting and what they mean

Thanks

 

[JimmyMachE]

can you explain what these are and what they are measuring? Trying to interpret the values I am getting and what they mean
Thanks

They show voltage and SOC variations within the battery, the lower the better.

post #61 - battery with bad modules
post #64 - healthy battery

 

[MICO]

I'll add to everyone's frustration with OTA updates. My MME shows on the Ford website (before they changed it in the last 2 weeks) at 65% SOC for the 12v battery. Because of the low state I couldn't download a software update displaying on the center panel, which according to the title is Priority Update-Battery Optimization (Battery and remote start enhancements. More specifically Update 24-PU0121-FTDI-FX

I took the car to my dealer which checked the battery (the 5th test since ownership, all has been low) and they verified the battery state of charge at ONLY 35%. They charged the 12v "BMS cold soak" (whatever that is) for 10 hours and rechecked it, now at 86%. The update which the dealer tried to manually to install was still not working. They charged the HVB to 99% and retested for the software update and it still nothing! They contacted their hotline and was informed the vehicle was up to date and "no further action" is needed at this time. In my frustration, I opened a service ticket with Ford Customer relations. The dealer told me that the field service engineer was involved and that Ford will do a OTA update as "needed" !!!!!

What does this mean? Today, I got off the phone with Ford and was told they don't have an answer! Meanwhile the car is calling for the update and they, the dealer, or the engineer can't remove the requested OTA update from my car. If another update, for what ever the reason comes up in the future, will my car download the new software when this old one is still pending? Can anyone come up with a suggestion? Your help is what I need. I can't get anywhere with Ford!!!!!

 

[PianoDan0]

Really interesting! Keep us posted the effect on SoH the new modules have.

Assume you’re having 2 modules changed rather than 2 cells, didn’t think it was possible to change cells in the MME and when modules need changing they should be swapped in pairs is my understanding.

So I finally got my car back this week. I read my battery SOH and it dropped to 84%!

I suspect it may have something to do with recalibration, so I plan to run my battery down to something like 10% then do a full charge back up to 100% and check it again.

 

[Mach-Lee]

So I finally got my car back this week. I read my battery SOH and it dropped to 84%!

I suspect it may have something to do with recalibration, so I plan to run my battery down to something like 10% then do a full charge back up to 100% and check it again.

If you had modules replaced it's going to take a couple weeks for the cells to complete balance out. Make sure the car can charge to 100% okay, if not it needs to go back.

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